The shared living room of my brother and I was dimly lit, the only source of light coming from the flickering television screen. I was lounging on the couch, engrossed in a late-night talk show, when my brother entered the room.
I could tell he was feeling horny just by the way he was swaying his hips as he walked towards me. He approached me with a mix of amusement and annoyance in his eyes.
"Hey sis," he said, trying to sound casual. "Can you, uh, jerk me off?"
I raised an eyebrow and looked at him with a smirk. "Excuse me?"
He repeated his request, this time with a little more confidence. I considered his request for a moment before responding.
"Alright, I'll do it," I said. "But on one condition: I get to do it my way."
He nodded eagerly, not realizing what he had just agreed to. I warned him that it might hurt a little, but he didn't seem to care.
I started jerking him off, but every now and then, I would slap his cock hard with my hand. He yelped in surprise and pain, but I just laughed at his reaction. I continued to jerk him off, alternating between gentle strokes and hard slaps.
"Ow! You're such a brute!" he protested, calling me a sadist.
I just laughed harder and told him to toughen up. Despite the pain, he couldn't deny that it felt good. He started to get more and more turned on, and I noticed. I began to jerk him off faster, and he moaned and begged me to slow down.
But I ignored him and continued to jerk him off at a rapid pace. He could feel himself getting close to climax, but just as he was about to cum, I stopped and slapped his cock one last time.
He cried out in frustration, and I laughed and told him that he'll have to wait for his release. I stood up and left the room, leaving him lying on the couch, hard and unsatisfied.
He called after me, but I just laughed and told him to "man up". He groaned and adjusted himself, still hard and aching for release.
I couldn't believe what just happened. I was both in pain and turned on. I knew I'll have to ask my sister again, but I was also a little scared of what she might do.
I decided to take a cold shower to calm myself down. As I stood under the water, I couldn't help but think about my sister's rough hands and the way she laughed at me.
I got out of the shower and wrapped a towel around my waist. I knew I'll have to face my sister again, but I wasn't sure if I was ready for another round.
I took a deep breath and walked back into the living room. I saw my sister sitting on the couch, looking amused. I knew I was in for another wild ride.
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